6^4 



NATURE 



[February ii, 191 5 



Subjects for Mathematical Essays. By Dr. C. 

 Davison.' Pp. x+i6o. (London: Macmillan and Co., 

 Ltd.)- 3s. 6d. 



Heaton's Annual. The Commercial Handbook of 

 Canada and Boards of Trade Register. Eleventh 

 year. Pp. 514. (Toronto : Heaton's Agency.) 5s. 



University Correspondence College. The Calendar 

 1914-15. Pp. 142. (London : University Tutorial 

 Press, Ltd.) is. net. 



Junior Algebra*. By A. G. Cracknell and A. Barra- 

 clough. Pp. vi + 280. (London : University Tutorial 

 Press, Ltd.) 25. M. 



Marvels of Insect Life. Edited by E. Step. Pp. 

 viii + 486. (London: Hutchinson and Co.). 105. 6(i. 

 net. 



The Drama of the Year in South Africa. Bv M. 

 •Ritchie. Pp. x+ii8. (London: T. C. and E. C. 

 Jack.) 2.S. 



The Journal of the South-Eastern Agricultural Col- 

 lege, Wye, Kent. No. 22. Pp. 561. (London : 

 H^adley Bros.) 



Evolution and Disease. By Dr. J. T. C. Nash. Pp. 

 viii + 73. (Bristol : J. Wright and Sons, Ltd.) 35. 6d. 

 net. 



Dynamometers. By Rev. F. J. Jervis-Smith. 

 Edited and amplified by C. V. Boys. Pp. xvi + 267. 

 ■(London : Constable and Co., Ltd.) 14s. net. 



Masonry as Applied to Civil Engineering. By F. 

 Noel Tavior. Pp. xi + 230. (London : Constable and 

 Co., Ltd.) 6s. net. 



Foundations of Plant-Breeding. By Dr. J. ^L 

 Coulter. Pp. xiv + 347. (New York and Chicago : 

 D. Appleton and Co.) 6s. net. 



A Guide to the Fossil Remains of Man in the 

 Department of Geology and Palaeontology in the 

 •British Museum (Natural History), Cromwell Road, 

 S.W. Pp. 30. (London : British Museum (Natural 

 History). 4^. 



LT^niversity College of North Wales. Calendar for 

 the Session 1914-15. Pp. 404. (Manchester : J. E. 

 Cornish, Ltd.) 



Squire's Pocket Companion to the British Pharma- 

 copoeia. By P. W. Squire. Second edition. Pp. 

 xvi+1040. (London: J. and A. Churchill.) los. 6J. 

 net. 



DIARY OF SOCIETIES. 



• * THURSDAY. February it. 



Royal Society, at 4.30. — Lcfiidosirobus Kentuckiensis, formerly Lepi- 



dosirohus Fisckeri, Scoit and Jeffrey; A Correction: Dr. D. H. Scott. 



—The Excitatory Process in the Doe's H»art. II.: The Ventricles: 



T. Lewis and M. A. Rothschild.— The Variation in the Growth of 



Mammalian Tissue ?'« vitro according to the Age of the Animal: A. J. 



Walton. 

 Royal Institution, at 3.— Nations as Species : Dr. P. Chalmers Mitchell. 

 Institution OP Electrical Engineers at 8. — Condhions Affecting the 



Variation in Strength of Wirele'ss Signals : Prof. E. W. Marchant. 

 Child Study Society, at 6.— With the British Association in Australia: 



Dr. C. W. Kimmins. 

 Royal Socipty of Arts, at 4.30.— Tribes of the Brahmaputra Valley: 



Sir George D. Dunbar, Ba't. 



■ FRIDA K, February 12. 

 Royal Institution, at g.— Recent Advances in Oceanography Dr. 



W. S. Bruce. 

 Royal Astkoxomical Society, at 5.— Anniversarv Meeting. 

 Physical Society, at 8.— Annual General Meeting.— The Criterion of 

 Steel Suitable for Permanent Magnets : Prof. Silvanus P. Thompson.— A 

 Galvanic Cell which Reverse* its Polarity when Illuminated : Alan A. 

 ■ Campbell Swinton.— An Investieation on the Photographic Effect of 

 Recoil Atoms : A. B. Wpod and A. I. Steven. 



MONDA r, February 15. 

 Royal Society op Arts, at 8.— Motor Fuel : Prof. V. B. Lewes. 

 Victoria Institute, at 4-30.— Traces of a Religious Belief of Primeval 

 Man : Rev. D. Gath Whitley. 



TUESDAY, February 16. 

 Royal Institution, at 3.— Muscle in the Service of Nerve : Prof. C. S. 



Sherrington. 

 Ii.LUMiNATiNcr ENGINEERING SOCIETY at 8.— The Development and 



Design of Lighting Fixtures in Relation \o Architecture and Interior 



Decorations : F. W. Thorpe. 



NO. 2363, VOL. 94] 



KoYAL Statistical hiociEi v, at 5.15. — The Magnitude of the Population 

 of England and Wales Available for Emigration : Dr. E. C. Snow. 



WEDNESDA V. February 17. 

 RovAL Society OF Arts, at S. ., 



Institution op Electrical Ij^ngineers, at 7.43.— (Student's Section). — 



Modern Power-House Condensing Plant : A. Arnold. 

 Royal Microscopical Society, at 8. — Presidential Address : Some of the 



Micro-biological Problems of the Present War: Prof. G. Sims Woodhead. 

 Royal Meteorological Society, at 7.30. — Observation* of the Upper 



Atmosphere at Aberdeen by Means of Pilot Balloons : A. E. M. Geddes. 



— The Influence of Weather Conditions upon the Amounts of Nitric Acid 



and of Nitrous Acid- in the Rainfall at Melbotirne, Australia: V. G. 



Anderson. 



THURSDAY, February 18. 

 Royal Society, at 4.30. — P^obahle Papers: Gaseous Combustion at High 



Pressures: Prof. W. A. Bone and Others. — The Orbits of a Charged 



Particle Round an Electric and Magnetic Nucleus ; Prof. W. M. Hicks. 



The Lunar Diurnal Magnetic Variation and its Change with Lunar 



Distance : S. Chapman. 

 Royal Institution, at 3. — Struggle of Species : Dr. P.Chalmers Mitchell 

 LiNNKAN Society, at 5. — The Action of Light upon Chlorophyll: H 



Wager. 

 Institution op Petroleum Technologists, at 8. — The "Cracking." 



of Oils, with a View to Obtaining Motor Spirit and other Products. 



W. A. Hall. 

 Institution of Mining and Metallurgy, at 8. 



FRIDA K, February iq. 

 Royal Institution, at 9. — The Visit of the British Association Xp 



Australia: Prof. H. E. Armstrong. 

 Institution of Mechanical Engineers, at 3. ^Annual General 

 Meeting. 



5^ rt'/fZJ/lF, February 7o. 

 Royal Institution, at 3. — Recent Researches on Atoms and Ions : Sir 

 J. J. Thomson. 



CONTENTS. PAGE 



The Real Japan. By Prof. John Perry, F.R.S. . . 639 



Lamarck's Evolution Theory. By J. A. T 639 



General and Specialised Geology. By G. A.J. C. 640 



Our Bookshelf 64J 



Letters to the Editor : — 



A Penalty on Research.— Sir William Ramsay, 



K.C.B., F.R.S 642 



The Spectra of Helium and Hydrogen. — Prof. J. W. 



Nicnolson 642 



On the History of a Notation in Trigonometry. — 



Prof. Floriari Cajori ... 642 



Measurements of Medieval English Femurs. — F. G. 



Parsons 643 



rheasants and Gun-Firing.— Rev. H. Cotton Smith 643 

 Notes on Stellar Classification. — IH. {With Dia- 

 grams.) By Sir Norman Lockyer, K.C.B., F.R.S. 644 

 The Manufacture of Dyestuffs. (Ilhistrated.) . . . 646 



Metals and War 647 



Notes 647 



Our Astronomical Column :— 



The Red Region in the Spectra of Wolf-Rayet Stars 652 



Aid to Astronomical Research 652 



, The Spectrirm of Lightning 653 



Report of the Smithsonian Astiophysical Observatory 653 



Ornithological Notes. By R. L. 653 



Clay and Pottery Industries. By Joseph Burton 654 

 The Irish Technical Instruction Association. By 



J. H. Reynolds 654 



Forthcoming Books of Science 655 



The Bronze-Age Invaders of Britain. By Prof. 



Arthur Keith, F.R.S 657 



University and Educational InteUigence 661 



Societies and Academies 661 



Books Received 663 



Diary of Societies 664 



Editorial and Publishing Offices: 



MACMILLAN & CO., Ltd., 



ST. MARTIN'S STREET, LONDON. W.C. 



Advertisements and business letters to be addressed to tht 



Publishers. 



Editorial Communications to the Editor. 



Telegraphic Address : Phusis, London, 

 Telephone Number : Gerrard 8830. 



